Window-ventilator.



" D. 0. DAVIS.

WINDOW VENTILATOB. .APPLIoAmIoN FILED rma. 5, 190e.

Patented Oct; 19, 1909.

DAVID O. DAVIS, 0F NEW YORK, N. Y.

WINDOW-VENTILATOR.

Specification of Letters Patent.

Patented Oct. 19,- 1909.

y Application filed. February 5, 1909. Serial No. 476,231.

fication, such as will enable those skilled inl the art to which it appertains to make and use the same. i This invention relates to ventilators for use in windows, and the object thereof is to provide an improved device of this class particularly designedl for use in windows of railway cars, but which may be used wherever such devices are applicable; a further Aobject being to provideV a ventilator of the class specified by means of whichr a freer circulation of air into and from a car vis permitted than by an ordinary screen, and which may be easily closed whenever desired; a further object being to provide a ventilator of the class specified by means of which unnecessary drafts may be ,controlled or prevented, and by means of which. air may be permitted to circulate through one part of the ventilator while excludingit from another, and which will also permit of the ejection of air from within the car; and with these and other objects in view the invention consists of a ventilator of the class specified constructed as hereinafter described and claimed. Y l

The invention which forms a basis of this application is an improvement on that described and claimed in U. S. Letters Patent #706,905 granted to me Aug. 12, 1902, and is fully disclosed in the following` specification of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which A a Figure 1 is an inside view of the bottom portion of a window and showing my improved ventilator placed beneath the bottom sash, Fig. 2 a horizontal section of the ventilator detached, Fig. 3 a transverse vertical section on the line 3-3 of Fig. 2, and ;-'F ig. 4 a transverse vertical section on the line 4 4 of Fig. 2.

In the drawing forming part of this specication, I have shown at a the bottom portion of a window frame and at b the bottom portion of a bottom sash mounted therein, and in the practice of my invention I provide a ventilator comprising an oblong casing c, the opposite end portions of which are provided with front or inner doors c2 which are hinged at they bottom as shown at c3, and said doors are provided at or near the top thereof with knobs or handles 04 and with inwardly directed segmental arms c5 movable through keepers cG secured to the end walls of the casing c, and by means of this construction the doors c2 may be opened at the I top and held in any desired position, the parts 05 and 06 being so constructed as t0 permit of this operation.

The central portion of the casing c is provided with a stationary inner or front wall c7, and between the end portions thereof and the back wall C8 of the casing 0 are placed doors d which are hinged to the front wall c7, and which are provided with curved handles Z2 which pass through slots or apertures cl3 in the central front wall c7, and by means of which the doors d2 may be swung inwardly as indicated by the arrows d* in Fig. 2, and said doors divide the boX or casing c into a central compartment e and end compartments c2 and by means of the said doors the said compartments may be separated or thrown into communication as may be desired.

The central compartment c is provided with a central transverse partition f, andat the back of said compartment is a screen f2 divided into separate parts by the partition f, and rearwardly7 of the central compartment e and of the screen f2 is a supplemental outer casing gwhich is connected with the casing c, and the length of which is substantially tlie same as the central compartment e, and the casing g forms a chamber g2 at the ends of which are placed screens g3, and the ends of the casing g are also preferably provided with flaring or outwardly directed end wings or deiiect-ors g4 at the outer side and at the top and bottom thereof. The casing g is also provided in the rear portion thereof with a forwardly rangingv partial partition g5 which extends about two-thirds of the way across said casing and partially divides the chamber g2 into separate compartments, each of which is provided in the bottom thereof with holes or apertures g6 which are designed to permit of the escape of rain or snow, and any other substances that may collect in the casing g, and the partition f is provided at its rear edge with a thickened portion f3 to which is secured a concavo-convex deiiector f4, the concave surface of which is directed outwardly or rearwardly, and the bottom of the casing g is provided between the end portions of the deflector f4 and the screen f2 with holes or apertures g7 similar to the holes or apertures g and for a similar purpose.

In practice my improved ventilator is placed in the bottom of the window frame, and the ends thereof tit in the grooves or spaces in which the sash I) is movable and in order to enable the ventilator to be easily inserted into position the end portions of the casing c are providedwith strips or cleats 7L, one or bothof which are hinged as shown in Fig. 2.

By hinging the doors c2 at the bottom so that they may be opened at the top, I provide means whereby air drawn in or forced into the chambers c2 may be discharged upwardly into the car or compartment within the window, and thus prevent the discharge of air directly and horizontally into said car or compartment, and when my improved ventilator is placed in the window of a car, the movement of the car will cause the air to pass in through one of the screens g3 and a portion of this air will be deflected into the corresponding part of the chamber e from which it will pass into the corresponding chamber c2 and out into the car if the door c2 of said chamber is open at the top; and the corresponding door (l also open, and in this operation, if the opposite door cl is open, the air will be drawn out through the other chamber e2, and will pass out through the corresponding screen g3, and in this way a forced draft is provided, this last operation being accomplished by reason of the fact that a part of the air which enters one end of the supplemental casing g passes around the partition g5 in said chamber and out through the opposite end of said casing thus creating a vacuum in one end portion of the central chamber e.

The operation, as will be understood, is controlled by the doors d, and the fact that the central chamber e is divided, and the doors d, as will be understood, may be controlled at all times by means of the handles (Z2 or any other suitable devices provided for that purpose.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

l. A ventilator of the class specified comprising a main oblong casing provided with front, baclr and end walls, the central portion of the front wall being stationary and the side portions thereof being hinged at the bottom to form doors ada )ted to be opened at the top, said casing being divided into a central compartment and two side compartments by doors hinged at the ends of the central stationary front wall, the central compartment being divided centrally by a transverse partition, and the back Wall of said compartment consisting of a screen, a supplemental casing secured centrally to the back of the main casing and inclosing said screen, the end portions of said supplemental casing being open, and provided with screens, and means for operating said doors.

2. A ventilator of the class specified comprising a main oblong casing provided with front, back and end walls, the central portion of the front- Wall being stationary and the side portions thereof being hinged at the bottom to form doors adapted to be opened at the top, said casing being divided into a central compartment and two side compartments by doors hinged at the ends of the central stationary front wall, the central compartment being divided centrally by a transverse partition, and the back wall of said compartment consisting of a screen, a supplemental casing secured centrally to the back of the main casing and inclosing said screen, the end portions of said supplemental casing being open, and provided with screens, and means for operating said doors, said supplemental casing being also provided with a partial partition which extends from the outer or back wall thereof inwardly, and a concavo-conveX deiiector placed within the supplemental casing centrally of the front thereof.

3. A ventilator of the class specified comprising a main oblong casing provided with front, back and end walls, the central portion of the front wall being stationary and the side portions thereof being hinged at. the bottom to form doors adapted to be opened at the top, said casing being divided into a central compartment and tivo side compartments by doors hinged at the ends of the central stationary front wall, the central compartment being divided centrally by a transverse partition, and the back wall of said compartment consisting of a screen, a supplemental casing secured centrallv to the back of the main casing and inclosing said screen, the end portions of said supplemental easing being open, and provided with screens, and means for operating said doors, said supplemental casing being also provided with a partial partition which extends from the outer or back Wall thereof inwardly, and a concavo-convex detlector placed within the supplemental casing centrally of the front thereof, and the bottom of the supplemental presence of the subscribing Witnesses this 4th casing being provided With apertures or day of February, 1909. openings some of Which are placed forwardly of the side edges of the concaVo-con- DAVID O DAVIS' veX deflector. Witnesses:

In testimony that I claim the foregoing as C. E. MULREANY, my invention ll have signed my name in H. R. CANFIELD. 

